426 Hemi

I was looking in a "For Sale" ad and saw a 426 Hemi block for sale. The date cast into the block was 2-21-73. I thought they stopped making Hemis in 1971. Can anybody shed some light on this? I have found nothing about this anywhere that I have looked.

What is the casting number on the block?? Any chance you have one of the few ball stud hemis that was in development after the 426 was discontinued at the end of 71. Ball stud hemis were being developed in both B and RB form to replace the 426. The B motor was 404 cubes and the RB was 444 cubes. The rocker geometry looked very much like a chevy set up which would have driven the cost of production down. Apparently they never made it to production although there have been reports of development blocks floating around for yrs.

Just because they stopped putting Hemis in production cars doesn't mean they stopped making the engines, does it? I know up until just a few years ago you could buy brand new 426 Hemis right from Chrysler. (And you may still be able to?)